<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>列表排序</title>
      <!-- 引入vue -->
      <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
   
    <div id="root">
        <!-- 遍历数组 -->
        
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <button @click="sortType=2">年龄升序</button>
        <button @click="sortType=1">年龄降序</button>
        <button @click="sortType=0">原顺序</button>
        <ul>

            <li v-for="(p,index) of filPerons" :key="p.id">
                {{p.name}}-{{p.age}}-{{p.sex}}
                <input type="text">
            </li>
        </ul>
       
</body>
<script type="text/javascript">
    Vue.config.productionTip = false //阻止vue在启动生成生产提示。
   
  //用computed实现
  new Vue({
        el:'#root',
        data:{
            keyWord:'',
            sortType:0,   //0表示原顺序，1表示降序2表示升序
            persons:[
                {id:'001',name:'马冬梅',age:'38',sex:'女'},
                {id:'002',name:'周冬雨',age:'19',sex:'女'},
                {id:'003',name:'周杰伦',age:'80',sex:'男'},
                {id:'004',name:'温兆伦',age:'21',sex:'男'}
                ],
           
        },
        computed:{
            filPerons(){
               const arr =  this.persons.filter((p)=>{
               return p.name.indexOf(this.keyWord)!==-1
            })
            //判断是否进行排序
            if(this.sortType){
               arr.sort((p1,p2)=>{
                  return this.sortType===1?p2.age-p1.age:p1.age-p2.age
               })
            }
               return arr
            
        }
        }
     })
    </script>
  </script>
</html>